Let's see, what functionality already exists in iTunes/iOS...
a) Awareness of whether the computer hosting iTunes library is present (either usb or wireless)? Yep, there already.
b) Able to see if the track is in the iTunes library? Yep, there already.
c) Load file from iTunes library? Yep, there already.
Right now an iOS device can get a music file from a computer, either via the USB cable or over wifi. I'm not sure why you think having Match activated makes that code cease to exist, as opposed to Apple disabling that functionality by choice. None of what you describe is new functionality at all, it's stuff that has been there for years that apple is just shutting off in an effort to push usage in a particular direction. I'm skeptical that users are that willing to take that push if it means a worse user experience in some respects (which it does, at this point nobody is arguing otherwise).
You may be right, that apple never makes these fixes. But I'd argue that if they don't, there's a good chance that Match is a flop (like what happened with Mobile Me, and what seems like a good possibility with iCloud so far).
I'm just one example. Right now I can do a large sync in a matter of minutes, if all the songs are being re-downloaded off the internet, that's potentially hours. That's enough to keep me from spending that $25 I'd otherwise love to give to Apple (and that's not the only flaw). And I'm sure I'm not the only user in that situation.
Apple doesn't have to listen to users (and testers), they can absolutely do what they want. But on the flipside, users don't have to buy what they're selling, just because Apple puts something out and insists on forcing users to work a certain way doesn't mean it's going to be a success.